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  • Android 更好的Activity生命周期回调

    /**
     * This class allows you to listen to when the user is entering the background (i.e. after a home button press,
     * or opening recent apps etc) and when the user resumes the application from the background.
     * 
     * @author John McDonnell
     */
    public class BetterActivityLifecycleCallbacks implements Application.ActivityLifecycleCallbacks {
     
     
        private int mForegroundActivities;
        private boolean mHasSeenFirstActivity;
        private boolean mChangingConfiguration;
     
        @Override public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
     
        }
     
        @Override public void onActivityStarted(Activity activity) {
            mForegroundActivities++;
     
            if (mHasSeenFirstActivity && mForegroundActivities == 1 && !mChangingConfiguration) {
                applicationDidEnterForeground(activity);
            }
     
            mHasSeenFirstActivity = true;
            mChangingConfiguration = false;
        }
     
        @Override public void onActivityResumed(Activity activity) {
     
        }
     
        @Override public void onActivityPaused(Activity activity) {
     
        }
     
        @Override public void onActivityStopped(Activity activity) {
            mForegroundActivities--;
     
            if (mForegroundActivities == 0) {
                applicationDidEnterBackground(activity);
            }
     
            mChangingConfiguration = activity.isChangingConfigurations();
        }
     
        @Override public void onActivitySaveInstanceState(Activity activity, Bundle outState) {
     
        }
     
        @Override public void onActivityDestroyed(Activity activity) {
     
        }
     
        /**
         * One day we'll be as cool as iOS
         */
        protected void applicationDidEnterForeground(Activity topActivity) {
     
        }
     
        protected void applicationDidEnterBackground(Activity lastActivity) {
     
        }
     
    }
    

      

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  • 原文地址:https://www.cnblogs.com/spring87/p/4442506.html
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